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<TITLE>JavaScript Source Code 3000:  Forms:  Strip Characters</TITLE>
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<META NAME="description" CONTENT="Strips the characters from an input string. You can change the characters you want removed from the string by changing one line of code.  Very useful!">
<META NAME="date" CONTENT="2000-10-11">
<META NAME="channel" CONTENT="Web Developer">
<META NAME="author" CONTENT="Ryan A. Somma">
<META NAME="section" CONTENT="Forms">

<SCRIPT LANGUAGE="JavaScript">
<!-- Original:  Ryan A. Somma (ryan@waygate.com) -->
<!-- Web Site:  http://www.waygate.com -->




<!-- Begin
function stringFilter (input) {
s = input.value;
filteredValues = "1234567890";     // Characters stripped out
var i;
var returnString = "";
for (i = 0; i < s.length; i++) {  // Search through string and append unfiltered values to returnString.
var c = s.charAt(i);
if (filteredValues.indexOf(c) == -1) returnString += c;
}
input.value = returnString;
}
//  End -->
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<FONT COLOR="#006666"><b>Strip Characters</b></font></font>
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<!-- Description --><!--content_start-->
Strips the characters from an input string. You can change the characters you want removed from the string by changing one line of code.  Very useful!
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<!-- Demonstration -->
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<p>This demo form will filter out all numeric values from the form below.  Enter a combination of alpha and numeric characters and click "Submit" to view the results.
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<form name=thisform method=post action="" onSubmit="">
<input type=text size=14 maxlength=14 name=inputField>
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<input type=button value="Submit" onClick="stringFilter(inputField);">
<input type=reset value="Reset">
</form>
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<tr><td BGCOLOR=yellow><font FACE="helvetica,arial,geneva"><b>JavaScript Source Code 3000:  Forms:  Strip Characters</b>
<p>Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s).  The script is yours!!!
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<form NAME="copy">

<DIV align="center">
<input type=button value="Highlight All" onClick="javascript:this.form.txt.focus();this.form.txt.select();">&nbsp;&nbsp;&nbsp;&nbsp;
<INPUT TYPE="text" NAME="total" VALUE="Script Size:  1.45 KB" size=24>
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<textarea NAME="txt" ROWS=20 COLS=75 WRAP=VIRTUAL>

&lt;!-- TWO STEPS TO INSTALL STRIP CHARACTERS:

  1.  Copy the coding into the HEAD of your HTML document
  2.  Add the last code into the BODY of your HTML document  --&gt;

&lt;!-- STEP ONE: Paste this code into the HEAD of your HTML document  --&gt;

&lt;HEAD&gt;

&lt;SCRIPT LANGUAGE="JavaScript"&gt;
&lt;!-- Original:  Ryan A. Somma (ryan@waygate.com) --&gt;
&lt;!-- Web Site:  http://www.waygate.com --&gt;

&lt;! &gt;
&lt;! &gt;

&lt;!-- Begin
function stringFilter (input) {
s = input.value;
filteredValues = "1234567890";     // Characters stripped out
var i;
var returnString = "";
for (i = 0; i &lt; s.length; i++) {  // Search through string and append to unfiltered values to returnString.
var c = s.charAt(i);
if (filteredValues.indexOf(c) == -1) returnString += c;
}
input.value = returnString;
}
//  End --&gt;
&lt;/script&gt;
&lt;/HEAD&gt;

&lt;!-- STEP TWO: Copy this code into the BODY of your HTML document  --&gt;

&lt;BODY&gt;

&lt;font face=arial size=-2&gt;
&lt;p&gt;This demo form will filter out all numeric values from the form below.  Enter a combination of alpha and numeric characters and click "Submit" to view the results.
&lt;/font&gt;
&lt;form name=thisform method=post action="" onSubmit=""&gt;
&lt;input type=text size=14 maxlength=14 name=inputField&gt;
&lt;br&gt;
&lt;input type=button value="Submit" onClick="stringFilter(inputField);"&gt;
&lt;input type=reset value="Reset"&gt;
&lt;/form&gt;

 

&lt;!-- Script Size:  1.45 KB --&gt;</textarea><br><font FACE="helvetica,arial,geneva"></font></td></tr>

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